Tire-alarm



0L F. SCHROEDEB.

.Patented Sept. 20, 1921.

UNITED fsTATEs PATENT OFFICE.

oTTo vFarm scHnoEDER, or

SANTA ANA,V CALIFORNIA.

TIRE-ALARM.

' Application led May 16,

T0 all-'whom it, may concern Be it known that I, OTTO FRED SCHROEDER, a citizen of theiUnited States, residing at Santa Ana, in the county; of Orange and State ofi California-,have invented certain new and useful improvements in Tire- Alarms, of which the following, is a specification. i

This invention relates ,to ani audiblesignal or alarm for indicating to thel vehicle driver or occupant the condition of inflation of the vehicle tire, whereby on the deflation rfrom any cause of the vehicle tire, a signal will be sounded on each successivev revolution of the wheel.

One of the principal objects of the invention .is to providev a simple construction adapted for use'in-connection' with tires of various cross sectional diameters, thereby adapting one type of device for use in conv nection with all vehicles having pneumatic tires. A further object is to provide a con struction operated on each successive revolution of the vwheel ,by the distortion of that portion of the tire adjacent thereto as the same contacts with the road surface. Other objects will appear from the following speciication. t Y

Referring more particularly to the drawings wherein is disclosed the preferred embodiment of my invention- Figure 1 is a view in broken section of a vehicle wheel with my invention applied thereto.

Fig. 2 is a transverse sectional view taken on line 2-2 of Fig. 3. v

Fig, 3 is a sectional view on line 3- 3 of Fig. 2.

Fig. 4 is a sectional view,on line 4-4 of Fig. 3. Y

1 is a pneumatic tire carried by the usual rim 2 mounted on a wheel felly 3. Secured to the felly in any suitable manner, as by screws 4, is a rectangular'supporting base 5, from which extends the bell standard 6 mounting a bell 7. The base supports a frame consisting of the main portion 8 and the upwardly disposed parallel arms 9 and the downwardly extending parallel arms 10, both arranged at the same side of the base 5, said frame being secured to the base by a suitable means 11. f

The upper ends of the arms 9 are connected by a shaft 12 and mounted thereon is a sleeve 13 radially from which extends a bell clapper VA14, adapted lfor swinging, as in.

Specification of LettersPatent. Patented Sept, 20, 192.1,

1921. Serial No. 470,125.

dottedlines, into engagementiwithy the edge of the bell 7.

Radially from'said sleeve 13, in line with the clapper 14, extends anarm 15 carrying a laterally disposed pin 16, with which is connected one end of a coiled operating spring 17.

The arms 10 are connected by a shaft 18 rotatable in bearings at. the ends thereof, and radially from one end of the shaft and lpinned thereto, as at 19,extends the lever v20 disposed .to contact with theside wall of the vehicle tire, as in Figs. 1 and 2 ofthe drawings.

The shaft 18 carries a radial arm 21 pinned thereto as at 22, and to the end of the lateral portion 23 of said arm is secured one end of a spring 24 attached to the frame 8 asat 25, said spring maintaining `the lever 20 in contact with the side wall of the tire 1 aty all times.

- A party V24 is carried by and rotatable about the shaft 18 between' the radially slotlted cupped compression plates 25', one posi- "tioned" on each side thereof, and each pinned to vrotate with the shaft, as at 26. The end of the part 24 is in thek form of a lever 27 laterally from which extends a headed pin .28 which connects with the opposite end of the coiled operating spring l17-Figs. 2

and 3.

It will be observed that on each successive revolution of the tire, the portion thereof adjacent the alarm becomes flattened or distorted on contacting with the road, which operation moves the lever 20 a greater or less degree, assuming to the position in dotted lines-Fig. 2, causing the member 27 vto move transversely of the shaft 12, compressing the spring 17 and causing a rapid movement of the clapper 14 from full to dotted line position-Fig 2. Onl the compressed portion of the tire assuming its natural shape, ythe spring 24 returns the lever 20 and part 27 to their normal position, as in full lines- Fig 2, and this movement causes a .return of the clapper from dotted to full I claimsl. A tire alarm devlce comprising a base for attachment to a "wheel, a bell, a bell` clapper associated with vthe'bell and `fulc crumcd for swinging movement tofand from the bell, an oscillating shaft, a lever associated therewith and disposed to extend adjacent tothe side wall of a vehicle tire, a part movable with the shaft transversely across the fulcrum of the clapper, and a' spring affording the sole operating lconnection between said part and the bell clapper.

2. A tire alarm` device comprisingl aV base for attachment to a` wheel, a bell, a bell clapper associated vwith the bell and fulcrume'd for swinging movement to and from 'the v bell, an oscillating shaft, a lever connected with and extending therefrom to the side wall of the vehicle tire, a part extending radiallyof and frictionally movable with the shaft, anda coiled spring connecting said part andsad clappen tachment to a wheel"a bell, abell clapper associated therewith'and fulcrumed` for arouate movement, an arm associated with the .clapper for arcuate movement therewith, a

shaft, a lever extending therefrom to a point adjacent the side wall of a vehicle tire and adapted for movement by the tire for imparting oscillating movementgto the' shaft, a part carried by and extending radially ofthe shaft with its free end adapted for arcuate movement with the Voscillation of the 3. A tirealarm comprising a base for at-V shaft, and a spring connecting the free end of said part and said arm.

4. A tire'alarm comprising a base for attachment to a wheel,1a bell, a bell clapper associated therewith, an oscillating shaft a lever extended therefrom to ai point adjacent to the side wall of a vehicle tire and adaptedl for vmovement by the tire for imparting an' oscillating movement to the shaft, a part carried by the shaft and'capableof free movement thereon, -a nfriction member carried( by and movable with the shaft and bearing on said part, whereby said part is operated by themovement ofthe shaft, and

a spring connecting said part andsaid bell clapper. v v Y 5.l A tire alarm comprising a base for attachment toV aV wheel, an. oscillating shaft,

cent to the sidewall of a vehicle tire-and kadapted forl movement by the tire for im- Vparting an oscillating movement to theshaft,

a part oarriedby the shaft and capable of free movement thereon, afriction member keyed to the shaft andbearinguonsaid vpart 'a lever extendedtherefrom to a pointv adja- Y "onf the oscillation offsaidshaft, an/a'udible v Vating membertherefor, and a connection beif i 

